DonTom
New member
No! Not with that wire going from the Dyna module to the crossover wire.Don -
Doesn't the presence of the short cross-over wire indicate that this is a wasted spark setup?
For an example. think if there is 12 volts on the center crossover wire, supplied by the wire from the Dyna module, and each end of the secondary ignition coils are grounded. Or vice versa. If there were no wires going to the grossover wire, only then would it prove two six volt coils. And if there are two six volt coils, why have the wire going to the crossover wire from the Dyna module? What's that wire doing? The fact that wire goes to the crossover wire makes be believe those are 12 volt Dyna coils. But not enough is shown on the schematic for me to be certain.
Now if somebody else can guess what that wire from the Dyna module to the crossover wire would do in a six volt coil system . . . . I cannot think of anything and keep on coming back to 12 volt coils which would make that wire a necessity.
I know for certain that San Jose BMW sold two Dyna systems for my 71 R75/5. One had a wasted spark (mine) and the other did not. MOST people, if not all, who did NOT already have an Dyna electronic ignition setup would go for the system that got rid of the wasted spark, since they had to buy all new ignition stuff anyway. Since I put in the Dyna system well before I dual plugged the bike, I had two options. Replace my entire Dyna ignition system, coils, module, everything OR keep everything which includes the wasted spark. I chose to keep the waste spark as I am unclear if there is any real advantage of getting rid of it other than the ignition system drawing half as much current, which isn't much anyway.
And I have the advantage that I could easily put points back in (but then I should put in a thingie to reduce the high point current from the Dyna coils). However, that ain't going to happen. I have a complete spare Dyna setup here, so there will never be a need to go back to points.
-Don- SSF, CA